Cash, cash equivalents and restricted cash (Tables)

3 Months Ended

Mar. 31, 2018

Cash, cash equivalents and restricted cash

Schedule of reconciliation of cash, cash equivalents and restricted cash

	March 31,
	2018			2017
	(in thousands)
Cash and cash equivalents	$	140,957	$	69,429
Short-term and long-term restricted cash		7,514		6,792
Total cash, cash equivalents and restricted cash	$	148,471	$	76,221